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Sequoia 819 Striker Avenue Suite <br /> Sacramento,CA 958344 <br /> 4 (9 16)921-9600 <br /> Analytical FAX(916)921-0100 <br /> 1T Corporation-Sacramento Project Parkinson ARCO Sampled 117100 <br /> 1433N Market Blvd,Ste 1 Project Number NIA Received 1/10/00 <br /> Sacramento CA 95834 Project Manager Kathleen Waldo Reported 1111,24100 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT/QU211ty Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal a Analyzed Level Result Result Units Recov Limits % Limit % Notes• <br /> LCS continued 0010109-BS1 <br /> Ethylbenzene 1111100 0200 <br /> 0 192 mglkg 70 0-130 96 0 <br /> Xylenes(total) N0 600 0 536 70 0-130 893 <br /> Surrogate a,a,a-Trijluorotoluene <br /> " 0200 0197 " 600-140 985 <br /> Matrix Spike 0010109-MSI S001075-03 <br /> Benzene 1/11/00 0200 ND 0 173 mg/kg 60 0-140 86.3 <br /> Toluene " 0200 ND 0 177 " 600-140 88.5 <br /> Ethylbenzene 0200 ND 0 176 600-140 88.0 <br /> Xylenes(total) " 0 600 ND 0 501 600-140 83.5 <br /> Surrogate a,a,a-Trifluorotoluene 0200 0188 600-140 940 <br /> Matrix Spike Dun 0010109-MSDI 5001075-03 <br /> 0 171 mg/kg 60 0-140 85.3 25 0 1.16 <br /> Benzene 1111100 0200 ND <br /> e " 0200 ND 0 168 of 600-140 84.0 250 522 <br /> ienzene " 0200 ND 0 196 600-140 980 250 10 8 <br /> Xylenes(total) 0 600 ND 0 498 600-140 83.0 250 0 601 <br /> Surrogate a,a,a-Triuorotoluene 0100 0188 600-140 940 <br /> Batch 0010121 Date Prepared- 1112100 Extraction Method EPA 5030B Me0 <br /> Blank 0010121-BLKI <br /> Purgeable Hydrocarbons 1/12100 ND mg/kg 00 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> ND 0 00500 <br /> Ethylbenzene <br /> " " <br /> Xylenes(total) ND 0 00500 <br /> 0181 60 0-140 910 <br /> Surrogate a aa-Tri,�luorotoluene 0200 <br /> LCS 0010121-BS1 <br /> Benzene 1112100 0 200 0 196 mglkg 700-130 98 0 <br /> Toluene 0200 0203 700-130 101 <br /> Ethylbenzene 0200 0202 It 700-130 101 <br /> _Xylenes(total) <br /> " 0 600 0 563 700-130 938 <br /> Surrogate a,a,a-Trifluorotoluene <br /> „ 0200 0189 " 600-140 94.5 <br /> Matrix S ike 0010121-MS1 S001069-06 <br /> Benzene 1112100 0200 ND 0 175 mg/kg 600-140 87.5 <br /> Toluene <br /> " 0200 ND 0 178 It600-140 89.0 <br /> Ethylbenzene 0200 ND 0 178 600-140 89.0 <br /> Xylenes(total) 0 600 ND 0 501 600-140 83.5 <br /> Surrogate a,a,a-Trifluorotoluene 0200 0 196 600-140 980 <br /> • 'Refer to entl ajreport for test of notes and def nitions <br /> Sequoia Analytical-Sacramento <br /> Page 14 of 20 <br />